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(No Model.)-

7 E. P. ELY. MAGHINE FOR THE REDUCTION OF WOOD PULP. No. 310,659. Patented Jan. 13,1885.

ATTEST. INVENTOR.

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' UEirE STATES EDWARD r. ELY, or SOUTH wALLiNcroRD, VERMONT, ASSIG-NOR ro ALEXANDER H. RITCHIE, on NEW YORK, N. v.

MACHINE FOR THE REDUCTION .OF WOOD PULP.

SPECIFICATION forming part of Letters Patent No. 310,659, dated January 13,1885. Application filed November-7, 1 883. (No model.)

To all 2071 0722, it may concern:

Be itknown that I, EDWARD I. ELY, a citizen of the United States, residing at South XVallingford, Vermont, have invented certain new and useful Improvements in Machines for the Reduction of lVood Pulp,of which the following is a specification.

My invention relates to improvements in a machine for reducing wood pulp, described and claimed in my previous application, Serial No. 109,898,1iled October 24,1883; andit consists in enlarging the lower terminus of the power-shaft of the machine into a cap concave on its under side, and adapted to fit over and turn on a convex step, the said cap and step being situated in awater-tank, and constructed, preferably, of hard wood-such as oak, locust, &c.--whereby the friction caused by the main shaft in its lower bearings will be distributed over a larger surface, decrease the wear and tear, and, by means of the surrounding watertank, prevent the rubbing contacts from becoming heated. In the present device, also, the arms or spokes of the machine are re-enforced by means of braces or brackets extend ing from beneath the emery ring or wheel to suitable places on the main shaft, by this means centralizing the p ressure upon said shaft and its lower bearings, as will be hereinafter more fully described.

Theabove-mentioned step is provided with a set-screw, and is adjustable vertically.

The accompanying drawing represents a side elevation, partly in section, of my improved machine.

A is the power-shaft or main spindle, receiving motion from any suitable source, and provided with ahub, B, having arms or spokes 0 extending from it. These arms C are provided with braces C, keyed or otherwise rigidly attached to the shaft A at A. The outer ends of the spokes O protrude into the circular trough or hollow frame I-I,whieh latter is provid ed for the reception ofthe wood pulp when ground. Resting upon and attached to the spokes O is a ring, D, adapted to turn with the other rotating parts. Dis the emery filling in the upper surface of the rin This ring may be continuous, or it may be formed in sections,whichever in practice may be found most desirable. The circular pulp-trough II is formed in two portions-an upper and a lower and is joined together at h. By this arrangement the upper half may be removed, permitting the emery-ring D to be easily taken out and renewed whenever it is desirer The hoppers, the automatic feeding arrangement, the means and method for supplying water to the emery-ring, and the means for sifting the wood pulp are all the same or substantially the same as those employed in my application above referred to. The lower portion of the main shaft A is provided with a cap, r, concave in its under side. This cap rests and travels upon a step, 10, which is made convex upon its'uppcr surface. Surrounding these parts,which aren1ade,preferably, ofhardwood, is a tank, :0, adapted to hold water, in order to keep the rubbing portions of r and to constant 1y cool and smooth. The step w is set in the bridge-tree 11 ,and is provided with a set-screw, y, for adjusting the bearings and taking up the wear caused by the rotating parts. Adjustable bearings z are also provided at both sides, or all around the main shaft, taking up any horizontal shifting.

Having thus described myinvention,whatI claim as new therein, and desire to secure by Letters Patent, is 4 1. In awood-pulp machine, the vertical power-shaft having means for rotating an emery-ring, andprovided with a cap adapted to rest and travel on a step, the said cap and step being respectively concave and convex, as and for the purposes set forth.

2. In a wood-pulp machine, the combination of the main powershaft, the cap having the concave lower surface, the stop having the convex upper surface, and the surrounding water-tank, all arranged substantially as and for the purposes set forth.

3. In awood-pul p machine,the combination, with vertical power-shaft and the concave cap, of the step adapted to form a bearing-surface for the above, and provided with means of adjustment, substantially as described.

4. In awood-pulp machine,the combination of the vertical power shaft or spindle having arms or spokes adapted to turn an emery-ring, and the braces placed directly under said emery-ring and extending downwardly and attached to the power-shaft, for strengthening a water-tank surrounding the same, as and for the purpose set forth.

7. The combination of a vertical shaft, a suitable step at bottom,npon which it rests and revolves, a water-tank surrounding the same, and means for maintaining them in axial alignment, substantially in the manner and for 20 the purpose set forth.

EDWARD 1:. ELY.

\Vitnesses:

HERBERT KNIGHT, \VALTER H. KNIGHT. 

